婉转,清丽,高亢(🥇),鸟儿在枝头欢唱(chàng )。世界自(zì )然纪(🔱)录(lù )片之父爱(ài )登堡(bǎo )老爵爷(🥈)讲(🐉)述(shù )(🛤)鸟(🌰)类鸣叫对于种群的意(yì )(🎾)义。
David Attenborough chooses seven of the most remarkable animal songs found in nature and explores the significance of these songs in the lives of their species.